# AU3FX:Push — AUv3 stereo dynamics processor

> AUv3 stereo dynamics processor with noise gate, compressor, and limiter. (iPhone/iPad app by Kymatica AB.)

- Source: https://appshunter.io/ios/app/au3fxpush/id1596371447 (this page in markdown: same URL + `.md`)
- Developer: [Kymatica AB](https://appshunter.io/developer/522046659)
- Category: Music
- Price: $6.99
- Rating: 4.70/5 from 14 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 2 MB
- Languages: American English
- Released: 2021-11-24
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/au3fxpush/id1596371447/reviews.md

## What is AU3FX?

A highly tweakable stereo dynamics processor with noise gate, compressor/expander with external side-chain input, and limiter/clipper. From subtle compression, extreme pumping, to maximum loudness!

This app is part of the AU3FX series, a collection of simple and powerful audio unit effect plugins.

• High quality 32-bit DSP engine. 
• Compressor/expander with optional lookahead buffer.
• Allows negative ratios for pumping/cancellation effects.
• Hard or soft knee with adjustable radius.
• Built-in side-chain low/high cut filters with monitor toggle.
• External side-chain input.
• Built-in noise gate.
• Brick-wall lookahead limiter.
• Hard/soft clipper.
• Supports "parallell compression".
• RMS/Peak envelope followers with attack, release and hold time.
• Switchable between Linear and Logarithmic mode.
• Automatic makeup gain.
• Stereo link on/off.
• Comes with several bundled presets. 
• Use multiple instances at the same time.
• Save/load session state in host.
• External access and control of all parameters from host.
• User presets shared across hosts (on iOS 13 and later).

## Key features

- Noise gate
- Compressor/expander with side-chain
- Limiter/clipper
- Negative ratio support
- External side-chain input
- Parallel compression
- Adjustable envelope followers

## Chart rankings

- #196 in Top Paid · Music (US App Store)

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/au3fxpush/id1596371447/reviews.md

### 5/5 — It’s a winner!

*2022-09-12*

Like all Kymatica apps, this has a look, feel and sound that makes it one of my first call fx. So glad to see these apps as AUv3. If you don’t have all of the Kymatica apps in your toolbox you’re missing out on essential iOS music apps.

### 1/5 — Too much latency

*2022-06-19*

This plug add 20 ms latency @ 48 Hz in AUM, unusable for real-time processing , very disappointing from the creator of AUM. NEED OPTIMIZATION PLEASE

### 5/5 — Excellent app from excellent developer

*2022-02-20*

Just give him your money. AUM and all of the Au3fx apps are essential for music producers.

### 5/5 — yeaaaahhh!!!

*2021-11-26*

just perfect)

## Frequently asked questions about AU3FX

### What is AU3FX:Push?

AU3FX:Push is a highly tweakable stereo dynamics processor that functions as an Audio Unit (AUv3) effect plugin. It includes a noise gate, compressor/expander with external side-chain input, and a limiter/clipper, allowing for a wide range of audio manipulation.

### What kind of audio processing can AU3FX:Push do?

AU3FX:Push can perform subtle compression, extreme pumping effects, and achieve maximum loudness. It supports negative ratios for unique pumping and cancellation effects, hard or soft knee compression, and parallel compression.

### Does AU3FX:Push support external side-chaining?

Yes, AU3FX:Push features an external side-chain input, allowing you to trigger its dynamics processing with another audio source. It also includes built-in side-chain low/high cut filters with a monitor toggle.

### What devices is AU3FX:Push compatible with?

AU3FX:Push is compatible with iPhone, iPad, and iPod devices. It requires iOS 13 or later for user presets to be shared across hosts.

### How much does AU3FX:Push cost?

AU3FX:Push is a paid application, priced at $6.99. There are no in-app purchases or subscriptions associated with this app.

### Is AU3FX:Push suitable for beginners?

While AU3FX:Push offers advanced features, its intuitive design and bundled presets make it accessible for beginners. Users can explore various presets to understand its capabilities before diving into detailed parameter adjustments.

### How often is AU3FX:Push updated?

AU3FX:Push was last updated on November 29, 2021, with version 1.1. The app was initially released on November 24, 2021. Users can expect updates to improve functionality and compatibility.

### Does AU3FX:Push have ads?

No, AU3FX:Push does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused solely on its audio processing capabilities.

## Version history (last 2 releases)

### 1.1 — 2021-11-29

- Allow setting threshold and ratio by dragging on the gain curve plot.
- Fix user preset save/load. (Please delete any user presets you tried to save in the previous version, they won't work)
- Fix loading of limiter duration from factory presets.
- Minor UI tweaks.

### 1.0 — 2021-11-25

No release notes.

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## More apps by Kymatica AB

- [AudioShare](https://appshunter.io/ios/app/audioshare/id543859300)
- [SECTOR](https://appshunter.io/ios/app/sector/id618095247)
- [The Oscillator](https://appshunter.io/ios/app/the-oscillator/id640819682)
- [AUFX:Space](https://appshunter.io/ios/app/aufxspace/id665650685)
- [AUFX:Dub](https://appshunter.io/ios/app/aufxdub/id678982701)
- [AUFX:PeakQ](https://appshunter.io/ios/app/aufxpeakq/id781852954)

All apps by Kymatica AB: https://appshunter.io/developer/522046659

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*